Christians in the U.K. and Nigeria held a protest on Wednesday to mark the 150 days that have passed since a 15-year-old Christian girl was kidnapped along with 110 others by the Islamic radical group Boko Haram in Nigeria.

The girl, Leah Sharibu, is the only person among that group who’s still being held captive by the terrorists because she refuses to renounce her faith in Jesus Christ.

One such protest took place at the Nigerian High Commission in London on Wednesday, with Christians praying and holding signs in support of Sharibu.

“It’s very important to remember that this isn’t just a protest — this is prayer and protest. CSW believes in those two things going together,” CSW CEO Mervyn Thomas told Premier in an article on Wednesday.

“So we’re hoping first of all that God will answer prayer but we’re also hoping that the Nigerian government will take action,” Thomas added.

In February, Sharibu became one of the thousands of women and children Boko Haram has kidnapped in its raids in the African country.

Her mother, Rebecca Sharibu, told persecution watchdog group Open Doors USA in April that she’s proud of her daughter.

“I know God will never forsake her. When she went away to school, I gave her a copy of the Bible so she could have her personal devotions even when I am not there. As her mother, I know her to be an obedient daughter, respectful and someone who puts others before herself,” the mother said at the time.

Nigerian celebrities, such as veteran singer Onyeka Onwenu, have also been making pleas to President Muhammadu Buhari to do more to find and rescue Sharibu.